body{
    background-color: #f0f0f0;
    margin: 0;
    box-sizing: border-box;
    font-size: 20px;
}
div{
    border: 1px solid black;
    text-align: center;
    padding: 10px;
    margin: 200px auto ;
    width: 500px;
    height: auto;
}
input{
    width: 240px;
    height: 23px;
    font-size: 20px;
}
button{
    background-color: #f0f0f0;
    border: 1px solid black;
    margin-top: 5px;
    width: 325px;
    height: 35px;
}